On PHPBuilder.com there's a new tutorial with ten handy tips you can use to work with associative arrays in your PHP applications.

The associative array -- an indispensable data type used to describe a collection of unique keys and associated values -- is a mainstay of all programming languages, PHP included. [...] Such extensive support can be a bit overwhelming to developers seeking the most effective way to manipulate arrays within their applications. In this article, I'll offer 10 tips that can help you shred, slice and dice your data in countless ways.